L marzoli



.L. MARZOLI June 6, 1944.

7 2,350,789 f PRESSURE DEVICE FOR DRAWING CYLINDERS FOR FLY FRAMES HAVING THREE, FOUR OR MORE CYLINDERS Flled May 22 1941 3 SheetsSheet l INVENTORl.

2 mm A M W 7w m5 uY LB,

ATTORN EY.

June 6, 1944. Y L. MARZOLI I 2,350,789

- PRESSURE DEVICE FOR DRAWING CYLINDERS FOR FLY FRAMES HAVING THREE, FOUR OR MORE CYLINDERS Filed May 22, 1941 5 Sheets-Sheet? INVENTO R},

LLLICUMAP Z LI BY ATTO RN EY,

June *3, 1944. 7 L MARZOLI PRESSURE DEVICE FOR DRAWING CYLINDERS FOR FLY FRAMES HAVING THREE, FOUR OR MORE CYLINDERS Filed May 22, 1941 5 SheetsSheet 3 JNVSNTOFQ.

LILIG! MARZOLI. BY E 5060 AT Y 0 P. N EY- Patented June 6, 1944 PRESSURE DEVICE FOR DRAWING CYL- INDERS FOR FLYFRAMES HAVING THREE, 7 FOUR, oRMoRE CYLINDERS I I Luigi'Marzoli; Palaz'zolo sui'ljoglio, Italy; vested in the Alien Property Custodian Application .May 22, 1941, .Serial No. 394,66

In Italy June 3,],1940

I 4 Claims; (01. 19-135) In the fly frames having three, four or more drawing cylinders, the topcylinders are pressed on the lower cylinders by the so called direct pressure, which is obtained by weighing the top cylinders with weights carried by hooksfixed on the centre of the axis of the cylinders. f

' With this system a weight of about kilos is necessary for eachv double cylinder, so that the aggregate weight amounts to .15 kilos for three cylinder and kilos for four cylinder fly flames respectively. 1 Moreover in the modern fiyflameswhich must be adapted to work fibres of normal length and also artificial fibres of about 50-55 mm length it is not easy to position exactly the weights on cylinders at a narrow and at a; wide distance apart. A further disadvantage consists in the fact that, when four or more cylinders are to' be used on the machine; the frame of the latter must be substantially modified. I V w v This invention has for its object to obtain the same pressure by means of a single small weight, for instance about 1.5 kg. by interposing between the top cylinders and the weight a hinged multiplying lever system so arranged as topermit an easy adjustment of the distance between the cylinders, whatever the number of the latter may. be.

According to this invention a pressure saddle constituted by a plurality of members hinged to each other'and prevented through a locking means from turning upwards is placed on the bushes of each top double cylinder in such manner as to apply an even pressure to these bushes. 'A hooked bar is adjustably fitted on the saddle and is hinged onan intermediate point of a lever in proximity toitsfulcrum. 3

The lever is in turn connectedat-its free end by means 'of a connecting-rod to another lever near its fulcrum. The latter lev'er carries at its free end the weight which acts therefore on the saddle with a double multiplication.

The pressure on the top-cylinders is relieved by carrying the lock means into its inoperative positionyso that the saddlecan bendthus permitting the lever carrying the weight to reston an adjustable stop releasing at the same time the lower cylinders from the pressure of the top cylinders.

A cam situated under the lever carrying the weight may be operated in such manner as to raise the lever and saddle thus permitting adJustment of the distance between the drawing cylinders.

The cams of the various groups of cylinders are mounted on a common shaft and are therefore operated simultaneously.

The annexed drawing shows by way of example two embodiments of the pressure device accordiiig-to the invention.

Fig. 1 is a cross section of the drawing cylinders of a fly frame having three cylinders at a wide distance from each other. a

. Fig. 2 is a view similar to Fig. 1, in which the weight is in its inoperative position.

1 Fig. 3 is a view similar to Fig. 1, in which the drawing cylinders are a little apart and the locking member is in its inoperative position.

v Fig. 4 is a perspective view.

5 is a cross section of the drawing cylindersof a fly frame havin four cylinders arranged at a short distance from each other.

1 Fig. 6 is a. viewsimilar to Fig. 5, the weights being in their inoperative positio .',Fi-g. 7,,i s a view similar to Fig. 5, in which t e drawing cylinders are at a wide distance from each other and the locking member is in its in: operative position.

i Fig. 8 isa perspective view. I

Referring to the drawings: I denotes a part of thefly frame, on which are arranged the groups of drawing cylinders comprising three lower cylinders 2 and three top pressure cylinders 3. A pressure saddle is arranged on the central bushes of the double cylinders. The saddleis constituted byflatj bars 4' and 5 hinged together at 6. The bar 4. is provided with an. extension from'the hinge point carrying pivoted thereonat 1 an arm 8 and, at 9, a locking member l0 provided with a handle ll and adapted, when brought into the position shown in Fig. 1, to prevent turning upwards of the'bars 4 and 5 on the hinged connection 6, and allows said turning when in the position shown in Fig. 3, thus releasing the cylinders from the pressure;

An extension I2 keyed on the pivot I3 is connected to. the arm 8 to facilitate the use of the described saddle construction with cylinders which have their axes either relatively widely spaced apart (as shown in Fig. 1) or relatively close together v(as shown in Fig. 3). The arm and the ex.- tens'ion are provided with notches M, in which may engage the hook of a rod I 5, the other end of which is hinged to an oscillating arm "5 pivoted at one end to a bracket l'l secured to the frame I and pivoted at its other end to a connecting rod l8, which is in turn pivoted to the lever l9 at a point 20 near its fulcrum 2 L The lever l9 carries at its free end a weight 22 and is provided in proximity to its fulcrum with a nose 23 resting on the set screw 24 when the locking member [0 is brought into its operative position shown in Fig. 3

for relieving the saddle from th action of the weight.

A cam 26 is keyed on a shaft 25 under the lever l9; the cam 26 on being oscillated in a clockwise direction, raises the lever l6 (Fig. 2) thus relieving the pressure from the drawing cylinders. The.

shaft 25 carries all the cams actingon the cor responding levers of the various groups of drawing cylinders, so that through the rotation of.

said shaft all the drawing cylinders are simulf taneously disengaged from the-weights:

It will be easily seen that by the ab'ove arrange -f ment it is possible to render the weights inoper= .by two members hinged to each other, a lever lockingfmeansoperatedby hand to prevent said members fromturning upwards on the hinged connectioma rod hooked on said saddle, a multi- --plyinglever'connected to the said rod, a second multiplyingql'ever connected to the first mentioned. lever, a weight on the free end of said .secondimultiplyinglever, an adjustable set screw in Fig. 1, in order to adjust the spacing according.

In" the embodiment shown'in, Figures 5 to8,"

the device is used on any framehaving four couples of drawing: cylinders or' lower" cylinders :21 and top cylinde'rs 2B. The saddlearranged on the bushes of the upper cylinders comprises tworock'er arms 29' and 30' acting on'pairs of" cylinders andpivoted at their central part toia; crosspiece 3!. The rocker arm 29"is connected to theicrosspiece'by means'of a" pin and slot'joint. 32 and is urged'on the cylinders by means of'a: locking member 33 provided with a-lever134i.

The cros'spiece 3! is provided'with anotch, in. which is hooked a" rod l5. are identical to those ofthe' embodiment first described" and are indicated by the same reference numerals; r Y

The device works in the samemann'er as'abuve described. When the'locking' m'ember33 is' in..its operative position (Fig, 5) theweight' 22 acts on the drawing cylinders through the multiplying levels; when it isbrought' into its inoperative. position (Fig. 7) the pressure of the weights 22. is re'leasedfrom the saddle owing to the fact" that'the lever l9 rests on the set screw 2'4.

When the earns 26 are brought into their'operative position (Fig. 6) t-he'pressure'of the weights 22' is released" from all the saddles. "WhatIcla'im'is: V

1. In a fly frame having at least three. groups {if double top drawing cylinders and cooperating bo'ttom cylinders, a pressure device comprising a saddle adapted to rest on' the bushes of each group of double top cylinders and constituted by two members hinged to each' other, a lever locking means operated by hand to prevent said nierr'ibtefsfrom turning upwards onthe hinged connection, a rod hooked on said saddleamultiplying lever connected to'the said rod, a second multiplying lever connected to the first mentioned lever, a weight on therfree end of said second multiplying lever, an adjustable set screw All the" other parts forthe weighted lever; on which said lever rests whenl-tl'ie-locking means is brought into the inoperatiye position to, release the weight pressure from the saddle and-means, operable at willj to raise the wei'ght" and release the weight pressure from the cylinders, I

,3: Irina fly frame having at least three groups of double top drawing cylinders andcpoperating bottom cylinders, a. pressure device comprising a saddle. adaptedito. rest. on. the bushesof each group of. double. top." cylinders and. constituted; bytwo members. hinged; to each. other, a. lever locking means operated by hand to' prevent-said members fromturning upwards on. the. hinged connection, a rodhnoked onsaidsaddlfig amulti-p. plying lever connected, to, the said. rod, a. second. multiplying. lever. connected. to. the. first, men-- tioned lever,v a weight on. the tree, end. oisaid secondmultiplying lever, an, adjustable setscr'ew for; the-weighted. lever, on. whichsald lever tests when the. locking meansis-brought into th mom erat'ive position to release the weight-DLQS$ HQ from thesaddle and a. cam arrangedunder each weightedlever toraise. the, weight and, release, the pressure from the drawing cylinders.

4. Inafly .frame having at least.- three groups of. double. top drawing cylinders and cooperat n bottom cylinders, a pressure device comprising a saddle adapted torest on thebushes 0t eachgroup. of double. top; cylinders and constituted by two membersv hinged to each other, a lever locking means operated by hand, to, prevent said members: from. turning upwards on, the hinged connection, arod hooked on saidsaddle, a mul i-- plying lever connected to thesaid rod, a second multiplying lever connected to the first men tioned lever, a weight on the free end oi said second multiplying lever, an adjustable set screw for the weighted lever, on which said levertests when the locking meansis brought-intothe inop. erative position to relieve the weight pressure from the saddle, a cam arranged under each weighted lever to; raise the weight and release the pressure from. the'drawing cylinders and a shaft on which said cams are keyed to; release the. pressure simultaneously from all the draws ingcylinders.

-- U GI MARZQLL 

